A scanned image featuring some new upcoming Kyutama and Shishi Red Orion/Ohlion plus a teaser for the final Kyuranger Voyager Machine/mecha has surfaced.
As far as we can say, this gonna be one huge mecha. No other information has been given until we can get a clear version of this image and translate it so as usual, stay tuned.

Lately the standard in super sentai is to have primary mecha for a few episodes, introduce a secondary mecha around episode 12-15, then have a mecha for the "6th" ranger introduced midseason and then one last mecha in the beginning of the last quarter of the season.

This is not including "accessory" mechas such as new weapons or arms.

Personally I think 4-5 mechas a year is a bit much, but this is first and foremost a toy commercial. If they can sell enough to warrant it, they're not going to stop.